- Premium 44 inch wide quilting fabric.
- 100% cotton flannel quilt fabric sold by the yard.
Robert Kaufman Mammoth Flannel Charcoal Grey Windowpane Heathered Plaid. Mammoth Flannel by Robert Kaufman Fabrics features soft and plush 2 ply flannel plaids. Premium 44 inch wide cotton woven plaid quilting fabric by the yard. 6.4 ounces per square yard.